Implementation Mini (Advanced Encryption Standard) by Substitution Box in Galois Field (24)

In this paper, a different method was used to find the Substitution Box, By the fourth exponent of the inverse of a function irreducible polynomial which is instead the first exponent of the inverse of the usual method, which is to use this different method after several experiments led to good results increased the complexity and security. the affine transformation period in GF(2
⁴
)increased to the max value of 16 periods .the distance of Strict Avalanche Criterion decreased to perfect value zero. The fixed point decreased to perfect value zero.